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Finding the Fourth Proportional to 407,798.80, 611,698.20 and 407,798.80

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Solution

The fourth proportional to 407,798.80, 611,698.20 and 407,798.80 is: 611,698.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,798.80 : 611,698.20 = 407,798.80 : x
  2. Step 2: Convert to fraction form
    407,798.80/611,698.20 = 407,798.80/x
  3. Step 3: Cross multiply
    407,798.80x = 611,698.20 × 407,798.80
  4. Step 4: Simplify right side
    407,798.80x = 249,449,791,922.16
  5. Step 5: Solve for x
    x = 249,449,791,922.16/407,798.80
  6. Step 6: Final answer
    x = 611,698.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.